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nrf timer rtc calculator

SYSTEM ONLINE

nRF Hardware Timers Calculator

Nordic has two drastically different timer systems. TIMER operates on a very fast HFCLK clock (16 MHz) and is power-hungry, used only for very precise and fast tasks. On the other hand, RTC runs in the background on an LFCLK crystal (32.768 kHz), draws fractions of a microampere and wakes up the chip in deep sleep. Note completely different formulas for Prescaler!

Formula: f = 16 MHz / 2^PRESCALER

Prescaler (0 - 9)

2^4

Target trigger time (ms)

Bit Mode

TIMER Operating Frequency

1.00 MHz

Time of one Tick: 1.000 µs

CC (Compare) Register Value

1000

Time to Overflow

71.58 min

MODULE UNDER CONSTRUCTION

EXPECTED DEPLOYMENT: Q4 2026